Negative electricity prices: when the exchange pays you to take power

The calculator counts the quarter hours with a negative exchange price for each recent day. Switch the view to daily or monthly averages.

For the exchange share of your bill

Negative quarter hours in 41 days

76

on 5 days, Germany

Lowest exchange price-0.3 ct/kWh
Equivalent hours19.00

Calculation method and sources

15 September 202622 September 202629 September 20266 October 202613 October 202620 October 2026
Number of quarter hours with a negative exchange price per day

Day-ahead wholesale prices: Bundesnetzagentur | SMARD.de (CC BY 4.0), fetched on 24 October 2026. Calculation: Radif Partners

A negative electricity price means that, for a given quarter hour, more power is offered than wanted on the day-ahead market, so generators pay to be allowed to deliver it. It happens mostly on sunny, windy days with low demand, such as weekend middays when solar panels run flat out and inflexible plants cannot ramp down fast enough. In the German and Luxembourg zone, 76 quarter hours fell below zero between 15 September 2026 and 25 October 2026, spread over 5 of 41 days; the lowest was -0.30 ct/kWh on 27 September 2026 at 12:45. In the Dutch zone the count was 121, with a low of -0.50 ct/kWh. On a dynamic tariff that rarely means money back: grid fees, taxes and levies stay the same per kWh, with VAT on top. Even at the lowest German exchange price of the period, the all-in price before any markup was still about 20.2 ct/kWh, and in the Netherlands about 10.5 ct/kWh. Such quarter hours are cheap all the same, and they are where flexible use belongs.

Checked by Radif Partners · Editorial policy · Method and sources

Negative quarter hours in recent weeks

15 September 2026 to 25 October 2026, day-ahead, source SMARD
Bidding zoneQuarter hours below zeroDays with negative pricesLowest valueon
Germany765-0.30 ct/kWh27 September 2026
Netherlands1215-0.50 ct/kWh25 October 2026
Austria263-0.75 ct/kWh28 September 2026
Belgium715-0.32 ct/kWh10 October 2026

The count is based on the quarter-hourly values from Bundesnetzagentur | SMARD.de: wholesale electricity prices (CC BY 4.0). Since all zones are cleared in one joint auction, negative prices often hit several countries at once; how strongly depends on each country’s wind and solar capacity and on how full the border lines are.

Why the all-in price almost never turns negative

Each German kilowatt-hour carries fixed amounts whatever the exchange price: the grid fee, electricity tax under Electricity Tax Act (StromStG), section 3, the levies and the concession fee, with VAT under German VAT Act (UStG), section 12 on top. In the Netherlands the energy tax from the Environmental Taxes Act (Wbm), articles 59 and 63 (1 January 2026) and VAT do the same. Only if the exchange price fell further than that sum would the all-in price go negative, and that did not happen in the period shown.

What you can do with it

Use that can be moved belongs in these quarter hours: charging the car, a heat pump with storage, a washing machine with a delay timer. Cheapest hour finds them for tomorrow once prices are published, and Dynamic electricity tariff shows how such days add up over a month.

Frequently asked questions

Do I get paid when power prices turn negative?

Not on a fixed contract: you pay your usual unit rate. On a dynamic tariff only the exchange part drops below zero, while grid fees, energy or electricity tax and levies are still charged per kWh, so the all-in price nearly always stays positive, just much lower. Whether a supplier passes on a negative exchange part in full depends on the contract.

Why do plants keep running when prices are negative?

Because switching off can cost some plants more than paying briefly: coal and nuclear units need hours to restart, combined heat and power plants also supply heat, and older wind and solar installations receive fixed payments whatever the exchange price. When cross-border lines are full, the surplus cannot flow abroad quickly enough either.

At what times do negative prices usually occur?

Mostly around midday, roughly 11 am to 4 pm, on sunny days, and above all at weekends and on public holidays when demand is low. Less often they occur at night in strong wind. In winter they are far rarer than between April and September because solar output is low. The daily view of the calculator shows how many quarter hours each recent day had.

Related pages and calculators

Sources

Written by

Publisher of calculators for the quarter-hourly day-ahead power price in Germany, the Netherlands, Belgium, Austria and Poland

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